🚀 go-pugleaf

I am looking into adopting InterViews for a production version of a prototype
application platform written last year.  The prototype uses Sun OLIT.  Before
even considering IV, I need to know that I can do one thing using IV that
is critical to the package:

The platform integrates a Geographical Information System with a GUI process.
The GIS writes an X window that covers most of the screen; its operations
are controlled by the GUI code.  The GUI process gets the X window id of
the GIS window and attaches it to an OLIT Stub widget, and adds an event
handler for the Stub that gets all mouse cursor movement events (allowing
screen-to-real-world coordinate conversion as the cursor moves).

My understanding is that a goal of IV is to keep the IV programmer working
exclusively at the object level and not do any direct X coding.  Am I
prevented from it?  Do one or more IV classes provide some analog to the
OLIT Stub, so that I can capture those mouse cursor movements using IV?

Dave Copperman